Are you sure its painted and not gelcoat?
When I look at tge Grady page for hull colors, they are all gel coat.Regardless, it's new so call Grady and ask how to care for it. Th user's manual should have a section on hull care.
All that aside, I know of one friends who had a painted hull. That hull did not like shrink wrap at all. The band around the hull that hold the shrink wrap in place would leave a mark and if the wind caused the shrink wrap to move a tad, the paint would get scratched. To be fair, I don't know what the hull was painted with but whatever it was, I would avoid it.